The gray screen issue in HP MediaSmart Webcam on an HP Pavilion g series could be resolved by trying the following steps:
1. Make sure the webcam is enabled in the BIOS settings.
2. Update the webcam driver from the HP website or through Device Manager.
3. Restart the computer and check if the issue is resolved.
4. If the problem persists, try reinstalling the HP MediaSmart Webcam software.
5. If none of the above steps work, it might be a hardware issue, and contacting HP support would be recommended.
